Help your electric cooling fan kick on as the engine warms up with the Four Seasons Engine Cooling Fan Switch, part number 36521, an engine/radiator-mounted cooling fan temperature switch that responds to coolant temperature. It fits many vehicles, among them the 1997-2006 Honda CR-V, 1994-2005 Honda Accord and 1992-2005 Honda Civic, as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list and engine details.
The switch is known by both names, engine cooling fan switch and cooling fan temperature switch. It mounts on the engine or radiator, where it senses coolant temperature and switches the cooling fan circuit as the temperature rises.
- Brass construction: the brass body is designed for accurate temperature sensing.
- Zinc-coated terminal: the coating helps the terminal resist corrosion.
- Sealing parts in the box: comes with the gaskets, O-rings or seals needed to properly replace the switch.
- Vehicle-specific: built for specific vehicle applications.
Signs this switch may need replacing include a cooling fan that never comes on, a fan that runs all the time, a temperature gauge that climbs in slow traffic, or coolant seeping around the switch. A relay, fan motor or wiring fault can cause the same symptoms, so diagnose the cause first. If the switch has failed, 36521 replaces it.
Four Seasons engineers and tests its products and draws on more than 50 years of mobile A/C experience.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right 1992-2005 Honda Civic switch?
Part 36521 is listed for the 1992-2005 Honda Civic. Check the "Vehicles it fits" section to confirm your exact year and engine before ordering.
Is this the correct 1994-2005 Honda Accord switch?
It is listed for the 1994-2005 Honda Accord and the 1997-2006 Honda CR-V. The "Vehicles it fits" section shows the engine-level details for each vehicle.
What does a cooling fan temperature switch do?
It mounts on the engine or radiator, senses coolant temperature and switches the electric cooling fan circuit as the engine warms up, so the fan can run when extra airflow is needed.
What comes with part 36521?
The switch comes with the gaskets, O-rings or seals needed to properly replace it. It has a brass body for accurate temperature sensing and a zinc-coated terminal to resist corrosion.
What are signs of a failing cooling fan switch?
Common signs are a fan that won't turn on, a fan that runs nonstop, overheating in traffic, or coolant leaking at the switch. Rule out relay, fan motor and wiring faults first.
